Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"han anh tran snippets" » "han anh tuan snippets", "han anh toan snippets", "han anh trac snippets", "phan anh tran snippets", "han danh tran snippets", "nhan anh tran snippets", "han anh tran slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("han anh tran snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han anh tran snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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